gearchart.com /
#3
Tech Regular
iTrader: (3)
This, of course, would be very useful for anyone running foam tires, where you can true the diameter that you want. I'll try and whip one up and attach it.
Twisted, what kind of chassis are you running and what size spur?
#4
Tech Regular
iTrader: (3)
Hey, wait a second, gearchart.com can do that for you. Just fill in all the information (pick your car, spur gear, and pinion), make sure your "plot spur/pinion" selection is set to "middle", then below that put your average tire width (say 58 mm), and MAKE SURE to select "yes" for "Target rollout chart?" Hit the "Rollout" button and there you go.